| 1 | /******************************************************************************* |
| 2 | * Copyright (c) 2008, 2009 IBM Corporation and others. |
| 3 | * All rights reserved. This program and the accompanying materials |
| 4 | * are made available under the terms of the Eclipse Public License v1.0 |
| 5 | * which accompanies this distribution, and is available at |
| 6 | * http://www.eclipse.org/legal/epl-v10.html |
| 7 | * |
| 8 | * Contributors: |
| 9 | * IBM Corporation - initial API and implementation |
| 10 | *******************************************************************************/ |
| 11 | package org.eclipse.pde.api.tools.internal; |
| 12 | |
| 13 | import java.io.BufferedInputStream; |
| 14 | import java.io.File; |
| 15 | import java.io.FileInputStream; |
| 16 | import java.io.IOException; |
| 17 | import java.util.ArrayList; |
| 18 | import java.util.HashMap; |
| 19 | import java.util.Iterator; |
| 20 | import java.util.List; |
| 21 | import java.util.Map; |
| 22 | import java.util.Map.Entry; |
| 23 | import java.util.jar.JarFile; |
| 24 | |
| 25 | import org.eclipse.core.resources.ISaveContext; |
| 26 | import org.eclipse.core.resources.ISaveParticipant; |
| 27 | import org.eclipse.core.runtime.CoreException; |
| 28 | import org.eclipse.core.runtime.IPath; |
| 29 | import org.eclipse.core.runtime.IStatus; |
| 30 | import org.eclipse.core.runtime.Status; |
| 31 | import org.eclipse.jdt.core.ElementChangedEvent; |
| 32 | import org.eclipse.jdt.core.ICompilationUnit; |
| 33 | import org.eclipse.jdt.core.IElementChangedListener; |
| 34 | import org.eclipse.jdt.core.IJavaElement; |
| 35 | import org.eclipse.jdt.core.IJavaElementDelta; |
| 36 | import org.eclipse.jdt.core.IJavaProject; |
| 37 | import org.eclipse.jdt.core.IPackageFragment; |
| 38 | import org.eclipse.jdt.core.IType; |
| 39 | import org.eclipse.jdt.core.JavaCore; |
| 40 | import org.eclipse.osgi.service.resolver.BundleDescription; |
| 41 | import org.eclipse.pde.api.tools.internal.ApiDescription.ManifestNode; |
| 42 | import org.eclipse.pde.api.tools.internal.ProjectApiDescription.TypeNode; |
| 43 | import org.eclipse.pde.api.tools.internal.model.ApiModelCache; |
| 44 | import org.eclipse.pde.api.tools.internal.model.PluginProjectApiComponent; |
| 45 | import org.eclipse.pde.api.tools.internal.provisional.ApiPlugin; |
| 46 | import org.eclipse.pde.api.tools.internal.provisional.Factory; |
| 47 | import org.eclipse.pde.api.tools.internal.provisional.IApiDescription; |
| 48 | import org.eclipse.pde.api.tools.internal.provisional.descriptors.IElementDescriptor; |
| 49 | import org.eclipse.pde.api.tools.internal.provisional.descriptors.IReferenceTypeDescriptor; |
| 50 | import org.eclipse.pde.api.tools.internal.provisional.model.IApiElement; |
| 51 | import org.eclipse.pde.api.tools.internal.provisional.scanner.ScannerMessages; |
| 52 | import org.eclipse.pde.api.tools.internal.util.Util; |
| 53 | import org.w3c.dom.Element; |
| 54 | import org.w3c.dom.Node; |
| 55 | import org.w3c.dom.NodeList; |
| 56 | |
| 57 | import com.ibm.icu.text.MessageFormat; |
| 58 | |
| 59 | /** |
| 60 | * Manages a cache of API descriptions for Java projects. Descriptions |
| 61 | * are re-used between API components for the same project. |
| 62 | * |
| 63 | * @since 1.0 |
| 64 | */ |
| 65 | public final class ApiDescriptionManager implements IElementChangedListener, ISaveParticipant { |
| 66 | |
| 67 | /** |
| 68 | * Singleton |
| 69 | */ |
| 70 | private static ApiDescriptionManager fgDefault; |
| 71 | |
| 72 | /** |
| 73 | * Maps Java projects to API descriptions |
| 74 | */ |
| 75 | private Map fDescriptions = new HashMap(); |
| 76 | |
| 77 | /** |
| 78 | * Path to the local directory where API descriptions are cached |
| 79 | * per project. |
| 80 | */ |
| 81 | public static final IPath API_DESCRIPTIONS_CONTAINER_PATH = |
| 82 | ApiPlugin.getDefault().getStateLocation(); |
| 83 | |
| 84 | /** |
| 85 | * Constructs an API description manager. |
| 86 | */ |
| 87 | private ApiDescriptionManager() { |
| 88 | JavaCore.addElementChangedListener(this, ElementChangedEvent.POST_CHANGE); |
| 89 | ApiPlugin.getDefault().addSaveParticipant(this); |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Cleans up Java element listener |
| 94 | */ |
| 95 | public static void shutdown() { |
| 96 | if (fgDefault != null) { |
| 97 | JavaCore.removeElementChangedListener(fgDefault); |
| 98 | ApiPlugin.getDefault().removeSaveParticipant(fgDefault); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Returns the singleton API description manager. |
| 104 | * |
| 105 | * @return API description manager |
| 106 | */ |
| 107 | public synchronized static ApiDescriptionManager getDefault() { |
| 108 | if (fgDefault == null) { |
| 109 | fgDefault = new ApiDescriptionManager(); |
| 110 | } |
| 111 | return fgDefault; |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Returns an API description for the given project component and connect it to the |
| 116 | * given bundle description. |
| 117 | * |
| 118 | * @param project Java project |
| 119 | * @return API description |
| 120 | */ |
| 121 | public synchronized IApiDescription getApiDescription(PluginProjectApiComponent component, BundleDescription bundle) { |
| 122 | IJavaProject project = component.getJavaProject(); |
| 123 | ProjectApiDescription description = (ProjectApiDescription) fDescriptions.get(project); |
| 124 | if (description == null) { |
| 125 | if (Util.isApiProject(project)) { |
| 126 | description = new ProjectApiDescription(project); |
| 127 | } else { |
| 128 | description = new NonApiProjectDescription(project); |
| 129 | } |
| 130 | try { |
| 131 | restoreDescription(project, description); |
| 132 | } catch (CoreException e) { |
| 133 | ApiPlugin.log(e.getStatus()); |
| 134 | description = new ProjectApiDescription(project); |
| 135 | } |
| 136 | fDescriptions.put(project, description); |
| 137 | } |
| 138 | return description; |
| 139 | } |
| 140 | /** |
| 141 | * Cleans the API description for the given project. |
| 142 | * |
| 143 | * @param project |
| 144 | * @param delete whether to delete the file on disk |
| 145 | * @param remove whether to remove the cached API description |
| 146 | */ |
| 147 | public synchronized void clean(IJavaProject project, boolean delete, boolean remove) { |
| 148 | ProjectApiDescription desc = null; |
| 149 | if (remove) { |
| 150 | desc = (ProjectApiDescription) fDescriptions.remove(project); |
| 151 | } else { |
| 152 | desc = (ProjectApiDescription) fDescriptions.get(project); |
| 153 | } |
| 154 | if (desc != null) { |
| 155 | desc.clean(); |
| 156 | } |
| 157 | if (delete) { |
| 158 | File file = API_DESCRIPTIONS_CONTAINER_PATH.append(project.getElementName()) |
| 159 | .append(IApiCoreConstants.API_DESCRIPTION_XML_NAME).toFile(); |
| 160 | if (file.exists()) { |
| 161 | file.delete(); |
| 162 | } |
| 163 | file = API_DESCRIPTIONS_CONTAINER_PATH.append(project.getElementName()).toFile(); |
| 164 | if(file.exists() && file.isDirectory()) { |
| 165 | file.delete(); |
| 166 | } |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Notifies the API description that the underlying project has changed. |
| 172 | * |
| 173 | * @param project |
| 174 | */ |
| 175 | synchronized void projectChanged(IJavaProject project) { |
| 176 | ProjectApiDescription desc = (ProjectApiDescription) fDescriptions.get(project); |
| 177 | if (desc != null) { |
| 178 | desc.projectChanged(); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | /** |
| 183 | * Notifies the API description that the underlying project classpath has changed. |
| 184 | * |
| 185 | * @param project |
| 186 | */ |
| 187 | synchronized void projectClasspathChanged(IJavaProject project) { |
| 188 | ProjectApiDescription desc = (ProjectApiDescription) fDescriptions.get(project); |
| 189 | if (desc != null) { |
| 190 | desc.projectClasspathChanged(); |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | /* (non-Javadoc) |
| 195 | * @see org.eclipse.jdt.core.IElementChangedListener#elementChanged(org.eclipse.jdt.core.ElementChangedEvent) |
| 196 | */ |
| 197 | public void elementChanged(ElementChangedEvent event) { |
| 198 | IJavaElementDelta delta = event.getDelta(); |
| 199 | processJavaElementDeltas(delta.getAffectedChildren(), null); |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Remove projects that get closed or removed. |
| 204 | * |
| 205 | * @param deltas |
| 206 | */ |
| 207 | private synchronized void processJavaElementDeltas(IJavaElementDelta[] deltas, IJavaProject proj) { |
| 208 | IJavaElementDelta delta = null; |
| 209 | for(int i = 0; i < deltas.length; i++) { |
| 210 | delta = deltas[i]; |
| 211 | switch(delta.getElement().getElementType()) { |
| 212 | case IJavaElement.JAVA_PROJECT: { |
| 213 | IJavaProject jproj = (IJavaProject) delta.getElement(); |
| 214 | switch (delta.getKind()) { |
| 215 | case IJavaElementDelta.CHANGED: |
| 216 | int flags = delta.getFlags(); |
| 217 | if((flags & IJavaElementDelta.F_CLOSED) != 0) { |
| 218 | clean(jproj, false, true); |
| 219 | flushElementCache(delta); |
| 220 | } else if((flags & (IJavaElementDelta.F_RESOLVED_CLASSPATH_CHANGED |
| 221 | | IJavaElementDelta.F_CLASSPATH_CHANGED)) != 0) { |
| 222 | if (jproj != null) { |
| 223 | projectClasspathChanged(jproj); |
| 224 | flushElementCache(delta); |
| 225 | } |
| 226 | } else if((flags & IJavaElementDelta.F_CONTENT) != 0) { |
| 227 | if (jproj != null) { |
| 228 | processJavaElementDeltas(delta.getAffectedChildren(), jproj); |
| 229 | } |
| 230 | } else if ((flags & IJavaElementDelta.F_CHILDREN) != 0) { |
| 231 | processJavaElementDeltas(delta.getAffectedChildren(), jproj); |
| 232 | } |
| 233 | break; |
| 234 | case IJavaElementDelta.REMOVED: |
| 235 | clean(jproj, true, true); |
| 236 | flushElementCache(delta); |
| 237 | break; |
| 238 | } |
| 239 | break; |
| 240 | } |
| 241 | case IJavaElement.PACKAGE_FRAGMENT : { |
| 242 | int flags = delta.getFlags(); |
| 243 | if ((flags & IJavaElementDelta.F_CHILDREN) != 0) { |
| 244 | processJavaElementDeltas(delta.getAffectedChildren(), proj); |
| 245 | } |
| 246 | break; |
| 247 | } |
| 248 | case IJavaElement.PACKAGE_FRAGMENT_ROOT : { |
| 249 | int flags = delta.getFlags(); |
| 250 | if ((flags & (IJavaElementDelta.F_ARCHIVE_CONTENT_CHANGED |
| 251 | | IJavaElementDelta.F_ADDED_TO_CLASSPATH |
| 252 | | IJavaElementDelta.F_REMOVED_FROM_CLASSPATH)) != 0) { |
| 253 | projectClasspathChanged(proj); |
| 254 | } else if ((flags & IJavaElementDelta.F_CHILDREN) != 0) { |
| 255 | processJavaElementDeltas(delta.getAffectedChildren(), proj); |
| 256 | } |
| 257 | break; |
| 258 | } |
| 259 | case IJavaElement.COMPILATION_UNIT : { |
| 260 | int flags = delta.getFlags(); |
| 261 | switch (delta.getKind()) { |
| 262 | case IJavaElementDelta.CHANGED: { |
| 263 | if ((flags & (IJavaElementDelta.F_CONTENT | |
| 264 | IJavaElementDelta.F_FINE_GRAINED | |
| 265 | IJavaElementDelta.F_PRIMARY_RESOURCE)) != 0){ |
| 266 | if (proj != null) { |
| 267 | projectChanged(proj); |
| 268 | flushElementCache(delta); |
| 269 | continue; |
| 270 | } |
| 271 | } |
| 272 | break; |
| 273 | } |
| 274 | case IJavaElementDelta.ADDED : |
| 275 | case IJavaElementDelta.REMOVED : { |
| 276 | if (proj != null) { |
| 277 | projectChanged(proj); |
| 278 | flushElementCache(delta); |
| 279 | continue; |
| 280 | } |
| 281 | } |
| 282 | } |
| 283 | } |
| 284 | } |
| 285 | } |
| 286 | } |
| 287 | |
| 288 | /** |
| 289 | * Flushes the changed element from the model cache |
| 290 | * @param delta |
| 291 | */ |
| 292 | void flushElementCache(IJavaElementDelta delta) { |
| 293 | IJavaElement element = delta.getElement(); |
| 294 | if((delta.getFlags() & IJavaElementDelta.F_MOVED_TO) > 0) { |
| 295 | element = delta.getMovedToElement(); |
| 296 | } |
| 297 | if((delta.getFlags() & IJavaElementDelta.F_MOVED_FROM) > 0) { |
| 298 | element = delta.getMovedFromElement(); |
| 299 | } |
| 300 | switch(element.getElementType()) { |
| 301 | case IJavaElement.COMPILATION_UNIT: { |
| 302 | ICompilationUnit unit = (ICompilationUnit) element; |
| 303 | IType type = unit.findPrimaryType(); |
| 304 | if(type != null) { |
| 305 | ApiModelCache.getCache().removeElementInfo( |
| 306 | ApiBaselineManager.WORKSPACE_API_BASELINE_ID, |
| 307 | element.getJavaProject().getElementName(), |
| 308 | type.getFullyQualifiedName(), |
| 309 | IApiElement.TYPE); |
| 310 | } |
| 311 | break; |
| 312 | } |
| 313 | case IJavaElement.JAVA_PROJECT: { |
| 314 | ApiModelCache.getCache().removeElementInfo( |
| 315 | ApiBaselineManager.WORKSPACE_API_BASELINE_ID, |
| 316 | element.getElementName(), |
| 317 | null, |
| 318 | IApiElement.COMPONENT); |
| 319 | break; |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | /* (non-Javadoc) |
| 325 | * @see org.eclipse.core.resources.ISaveParticipant#doneSaving(org.eclipse.core.resources.ISaveContext) |
| 326 | */ |
| 327 | public void doneSaving(ISaveContext context) { |
| 328 | } |
| 329 | |
| 330 | /* (non-Javadoc) |
| 331 | * @see org.eclipse.core.resources.ISaveParticipant#prepareToSave(org.eclipse.core.resources.ISaveContext) |
| 332 | */ |
| 333 | public void prepareToSave(ISaveContext context) throws CoreException { |
| 334 | } |
| 335 | |
| 336 | /* (non-Javadoc) |
| 337 | * @see org.eclipse.core.resources.ISaveParticipant#rollback(org.eclipse.core.resources.ISaveContext) |
| 338 | */ |
| 339 | public void rollback(ISaveContext context) { |
| 340 | } |
| 341 | |
| 342 | /* (non-Javadoc) |
| 343 | * @see org.eclipse.core.resources.ISaveParticipant#saving(org.eclipse.core.resources.ISaveContext) |
| 344 | */ |
| 345 | public synchronized void saving(ISaveContext context) throws CoreException { |
| 346 | Iterator entries = fDescriptions.entrySet().iterator(); |
| 347 | while (entries.hasNext()) { |
| 348 | Entry entry = (Entry) entries.next(); |
| 349 | IJavaProject project = (IJavaProject) entry.getKey(); |
| 350 | ProjectApiDescription desc = (ProjectApiDescription) entry.getValue(); |
| 351 | if (desc.isModified()) { |
| 352 | File dir = API_DESCRIPTIONS_CONTAINER_PATH.append(project.getElementName()).toFile(); |
| 353 | dir.mkdirs(); |
| 354 | String xml = desc.getXML(); |
| 355 | try { |
| 356 | Util.saveFile(new File(dir, IApiCoreConstants.API_DESCRIPTION_XML_NAME), xml); |
| 357 | } catch (IOException e) { |
| 358 | abort(MessageFormat.format(ScannerMessages.ApiDescriptionManager_0, new String[]{project.getElementName()}), e); |
| 359 | } |
| 360 | } |
| 361 | } |
| 362 | } |
| 363 | |
| 364 | /** |
| 365 | * Restores the API description from its saved file, if any and returns |
| 366 | * true if successful. |
| 367 | * |
| 368 | * @param project |
| 369 | * @param description |
| 370 | * @return whether the restore succeeded |
| 371 | * @throws CoreException |
| 372 | */ |
| 373 | private boolean restoreDescription(IJavaProject project, ProjectApiDescription description) throws CoreException { |
| 374 | File file = API_DESCRIPTIONS_CONTAINER_PATH.append(project.getElementName()). |
| 375 | append(IApiCoreConstants.API_DESCRIPTION_XML_NAME).toFile(); |
| 376 | if (file.exists()) { |
| 377 | BufferedInputStream stream = null; |
| 378 | try { |
| 379 | stream = new BufferedInputStream(new FileInputStream(file)); |
| 380 | String xml = new String(Util.getInputStreamAsCharArray(stream, -1, IApiCoreConstants.UTF_8)); |
| 381 | Element root = Util.parseDocument(xml); |
| 382 | if (!root.getNodeName().equals(IApiXmlConstants.ELEMENT_COMPONENT)) { |
| 383 | abort(ScannerMessages.ComponentXMLScanner_0, null); |
| 384 | } |
| 385 | long timestamp = getLong(root, IApiXmlConstants.ATTR_MODIFICATION_STAMP); |
| 386 | String version = root.getAttribute(IApiXmlConstants.ATTR_VERSION); |
| 387 | description.setEmbeddedVersion(version); |
| 388 | if (IApiXmlConstants.API_DESCRIPTION_CURRENT_VERSION.equals(version)) { |
| 389 | description.fPackageTimeStamp = timestamp; |
| 390 | description.fManifestFile = project.getProject().getFile(JarFile.MANIFEST_NAME); |
| 391 | restoreChildren(description, root, null, description.fPackageMap); |
| 392 | return true; |
| 393 | } |
| 394 | } catch (IOException e) { |
| 395 | abort(MessageFormat.format(ScannerMessages.ApiDescriptionManager_1, |
| 396 | new String[]{project.getElementName()}), e); |
| 397 | } finally { |
| 398 | if (stream != null) { |
| 399 | try { |
| 400 | stream.close(); |
| 401 | } catch (IOException e) { |
| 402 | // ignore |
| 403 | } |
| 404 | } |
| 405 | } |
| 406 | } |
| 407 | return false; |
| 408 | } |
| 409 | |
| 410 | private void restoreChildren(ProjectApiDescription apiDesc, Element element, ManifestNode parentNode, Map childrenMap) throws CoreException { |
| 411 | NodeList children = element.getChildNodes(); |
| 412 | for (int i = 0; i < children.getLength(); i++) { |
| 413 | Node child = children.item(i); |
| 414 | if (child.getNodeType() == Node.ELEMENT_NODE) { |
| 415 | restoreNode(apiDesc, (Element) child, parentNode, childrenMap); |
| 416 | } |
| 417 | } |
| 418 | } |
| 419 | |
| 420 | private void restoreNode(ProjectApiDescription apiDesc, Element element, ManifestNode parentNode, Map childrenMap) throws CoreException { |
| 421 | ManifestNode node = null; |
| 422 | IElementDescriptor elementDesc = null; |
| 423 | if (element.getTagName().equals(IApiXmlConstants.ELEMENT_PACKAGE)) { |
| 424 | int vis = getInt(element, IApiXmlConstants.ATTR_VISIBILITY); |
| 425 | int res = getInt(element, IApiXmlConstants.ATTR_RESTRICTIONS); |
| 426 | // collect fragments |
| 427 | List fragments = new ArrayList(); |
| 428 | NodeList childNodes = element.getChildNodes(); |
| 429 | String pkgName = null; |
| 430 | for (int i = 0; i < childNodes.getLength(); i++) { |
| 431 | Node child = childNodes.item(i); |
| 432 | if (child.getNodeType() == Node.ELEMENT_NODE) { |
| 433 | if (((Element)child).getTagName().equals(IApiXmlConstants.ELEMENT_PACKAGE_FRAGMENT)) { |
| 434 | Element fragment = (Element) child; |
| 435 | String handle = fragment.getAttribute(IApiXmlConstants.ATTR_HANDLE); |
| 436 | IJavaElement je = JavaCore.create(handle); |
| 437 | if (je.getElementType() != IJavaElement.PACKAGE_FRAGMENT) { |
| 438 | abort(ScannerMessages.ApiDescriptionManager_2 + handle, null); |
| 439 | } |
| 440 | pkgName = je.getElementName(); |
| 441 | fragments.add(je); |
| 442 | } |
| 443 | } |
| 444 | } |
| 445 | if (!fragments.isEmpty()) { |
| 446 | elementDesc = Factory.packageDescriptor(pkgName); |
| 447 | node = apiDesc.newPackageNode((IPackageFragment[])fragments.toArray(new IPackageFragment[fragments.size()]), parentNode, elementDesc, vis, res); |
| 448 | } else { |
| 449 | abort(ScannerMessages.ApiDescriptionManager_2, null); |
| 450 | } |
| 451 | } else if (element.getTagName().equals(IApiXmlConstants.ELEMENT_PACKAGE_FRAGMENT)) { |
| 452 | return; // nothing to do |
| 453 | } else if (element.getTagName().equals(IApiXmlConstants.ELEMENT_TYPE)) { |
| 454 | String handle = element.getAttribute(IApiXmlConstants.ATTR_HANDLE); |
| 455 | int vis = getInt(element, IApiXmlConstants.ATTR_VISIBILITY); |
| 456 | int res = getInt(element, IApiXmlConstants.ATTR_RESTRICTIONS); |
| 457 | IJavaElement je = JavaCore.create(handle); |
| 458 | if (je.getElementType() != IJavaElement.TYPE) { |
| 459 | abort(ScannerMessages.ApiDescriptionManager_3 + handle, null); |
| 460 | } |
| 461 | IType type = (IType) je; |
| 462 | elementDesc = Factory.typeDescriptor(type.getFullyQualifiedName('$')); |
| 463 | TypeNode tn = apiDesc.newTypeNode(type, parentNode, elementDesc, vis, res); |
| 464 | node = tn; |
| 465 | tn.fTimeStamp = getLong(element, IApiXmlConstants.ATTR_MODIFICATION_STAMP); |
| 466 | } else if (element.getTagName().equals(IApiXmlConstants.ELEMENT_FIELD)) { |
| 467 | if(parentNode.element instanceof IReferenceTypeDescriptor) { |
| 468 | IReferenceTypeDescriptor type = (IReferenceTypeDescriptor) parentNode.element; |
| 469 | int vis = getInt(element, IApiXmlConstants.ATTR_VISIBILITY); |
| 470 | int res = getInt(element, IApiXmlConstants.ATTR_RESTRICTIONS); |
| 471 | String name = element.getAttribute(IApiXmlConstants.ATTR_NAME); |
| 472 | elementDesc = type.getField(name); |
| 473 | node = apiDesc.newNode(parentNode, elementDesc, vis, res); |
| 474 | } |
| 475 | } else if (element.getTagName().equals(IApiXmlConstants.ELEMENT_METHOD)) { |
| 476 | if(parentNode.element instanceof IReferenceTypeDescriptor) { |
| 477 | IReferenceTypeDescriptor type = (IReferenceTypeDescriptor) parentNode.element; |
| 478 | int vis = getInt(element, IApiXmlConstants.ATTR_VISIBILITY); |
| 479 | int res = getInt(element, IApiXmlConstants.ATTR_RESTRICTIONS); |
| 480 | String name = element.getAttribute(IApiXmlConstants.ATTR_NAME); |
| 481 | String sig = element.getAttribute(IApiXmlConstants.ATTR_SIGNATURE); |
| 482 | if (sig.indexOf('.') != -1) { |
| 483 | // old files might use '.' instead of '/' |
| 484 | sig = sig.replace('.', '/'); |
| 485 | } |
| 486 | elementDesc = type.getMethod(name,sig); |
| 487 | node = apiDesc.newNode(parentNode, elementDesc, vis, res); |
| 488 | } |
| 489 | } |
| 490 | if (node == null) { |
| 491 | abort(ScannerMessages.ApiDescriptionManager_4, null); |
| 492 | } |
| 493 | childrenMap.put(elementDesc, node); |
| 494 | restoreChildren(apiDesc, element, node, node.children); |
| 495 | } |
| 496 | |
| 497 | /** |
| 498 | * Returns an integer attribute. |
| 499 | * |
| 500 | * @param element element with the integer |
| 501 | * @param attr attribute name |
| 502 | * @return attribute value as an integer |
| 503 | */ |
| 504 | private int getInt(Element element, String attr) { |
| 505 | String attribute = element.getAttribute(attr); |
| 506 | try { |
| 507 | return Integer.parseInt(attribute); |
| 508 | } |
| 509 | catch (NumberFormatException e) {} |
| 510 | return 0; |
| 511 | } |
| 512 | |
| 513 | /** |
| 514 | * Returns a long attribute. |
| 515 | * |
| 516 | * @param element element with the long |
| 517 | * @param attr attribute name |
| 518 | * @return attribute value as an long |
| 519 | */ |
| 520 | private long getLong(Element element, String attr) { |
| 521 | String attribute = element.getAttribute(attr); |
| 522 | if (attribute != null) { |
| 523 | try { |
| 524 | return Long.parseLong(attribute); |
| 525 | } |
| 526 | catch (NumberFormatException e) {} |
| 527 | } |
| 528 | return 0L; |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * Throws an exception with the given message and underlying exception. |
| 533 | * |
| 534 | * @param message error message |
| 535 | * @param exception underlying exception, or <code>null</code> |
| 536 | * @throws CoreException |
| 537 | */ |
| 538 | private static void abort(String message, Throwable exception) throws CoreException { |
| 539 | IStatus status = new Status(IStatus.ERROR, ApiPlugin.PLUGIN_ID, message, exception); |
| 540 | throw new CoreException(status); |
| 541 | } |
| 542 | } |